crypto/x509/x509_req.c - third_party/openssl - Git at Google

 /*
  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 #include <stdio.h>
 #include "internal/cryptlib.h"
 #include <openssl/bn.h>
 #include <openssl/evp.h>
 #include <openssl/asn1.h>
 #include <openssl/asn1t.h>
 #include <openssl/x509.h>
 #include "internal/x509_int.h"
 #include <openssl/objects.h>
 #include <openssl/buffer.h>
 #include <openssl/pem.h>

 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
 {
     X509_REQ *ret;
     X509_REQ_INFO *ri;
     int i;
     EVP_PKEY *pktmp;

     ret = X509_REQ_new();
     if (ret == NULL) {
         X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
         goto err;
     }

     ri = &ret->req_info;

     ri->version->length = 1;
     ri->version->data = OPENSSL_malloc(1);
     if (ri->version->data == NULL)
         goto err;
     ri->version->data[0] = 0;   /* version == 0 */

     if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
         goto err;

     pktmp = X509_get0_pubkey(x);
     if (pktmp == NULL)
         goto err;
     i = X509_REQ_set_pubkey(ret, pktmp);
     if (!i)
         goto err;

     if (pkey != NULL) {
         if (!X509_REQ_sign(ret, pkey, md))
             goto err;
     }
     return ret;
  err:
     X509_REQ_free(ret);
     return NULL;
 }

 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
 {
     if (req == NULL)
         return NULL;
     return X509_PUBKEY_get(req->req_info.pubkey);
 }

 EVP_PKEY *X509_REQ_get0_pubkey(X509_REQ *req)
 {
     if (req == NULL)
         return NULL;
     return X509_PUBKEY_get0(req->req_info.pubkey);
 }

 X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *req)
 {
     return req->req_info.pubkey;
 }

 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
 {
     EVP_PKEY *xk = NULL;
     int ok = 0;

     xk = X509_REQ_get_pubkey(x);
     switch (EVP_PKEY_cmp(xk, k)) {
     case 1:
         ok = 1;
         break;
     case 0:
         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
                 X509_R_KEY_VALUES_MISMATCH);
         break;
     case -1:
         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
         break;
     case -2:
 #ifndef OPENSSL_NO_EC
         if (EVP_PKEY_id(k) == EVP_PKEY_EC) {
             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
             break;
         }
 #endif
 #ifndef OPENSSL_NO_DH
         if (EVP_PKEY_id(k) == EVP_PKEY_DH) {
             /* No idea */
             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
                     X509_R_CANT_CHECK_DH_KEY);
             break;
         }
 #endif
         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
     }

     EVP_PKEY_free(xk);
     return ok;
 }

 /*
  * It seems several organisations had the same idea of including a list of
  * extensions in a certificate request. There are at least two OIDs that are
  * used and there may be more: so the list is configurable.
  */

 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };

 static int *ext_nids = ext_nid_list;

 int X509_REQ_extension_nid(int req_nid)
 {
     int i, nid;
     for (i = 0;; i++) {
         nid = ext_nids[i];
         if (nid == NID_undef)
             return 0;
         else if (req_nid == nid)
             return 1;
     }
 }

 int *X509_REQ_get_extension_nids(void)
 {
     return ext_nids;
 }

 void X509_REQ_set_extension_nids(int *nids)
 {
     ext_nids = nids;
 }

 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 {
     X509_ATTRIBUTE *attr;
     ASN1_TYPE *ext = NULL;
     int idx, *pnid;
     const unsigned char *p;

     if ((req == NULL) || !ext_nids)
         return NULL;
     for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
         idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
         if (idx == -1)
             continue;
         attr = X509_REQ_get_attr(req, idx);
         ext = X509_ATTRIBUTE_get0_type(attr, 0);
         break;
     }
     if (!ext || (ext->type != V_ASN1_SEQUENCE))
         return NULL;
     p = ext->value.sequence->data;
     return (STACK_OF(X509_EXTENSION) *)
         ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
                       ASN1_ITEM_rptr(X509_EXTENSIONS));
 }

 /*
  * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
  * in case we want to create a non standard one.
  */

 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
                                 int nid)
 {
     int extlen;
     int rv = 0;
     unsigned char *ext = NULL;
     /* Generate encoding of extensions */
     extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
                            ASN1_ITEM_rptr(X509_EXTENSIONS));
     if (extlen <= 0)
         return 0;
     rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
     OPENSSL_free(ext);
     return rv;
 }

 /* This is the normal usage: use the "official" OID */
 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 {
     return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 }

 /* Request attribute functions */

 int X509_REQ_get_attr_count(const X509_REQ *req)
 {
     return X509at_get_attr_count(req->req_info.attributes);
 }

 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
 {
     return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
 }

 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
                              int lastpos)
 {
     return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
 }

 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 {
     return X509at_get_attr(req->req_info.attributes, loc);
 }

 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 {
     return X509at_delete_attr(req->req_info.attributes, loc);
 }

 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 {
     if (X509at_add1_attr(&req->req_info.attributes, attr))
         return 1;
     return 0;
 }

 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
                               const ASN1_OBJECT *obj, int type,
                               const unsigned char *bytes, int len)
 {
     if (X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
                                 type, bytes, len))
         return 1;
     return 0;
 }

 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
                               int nid, int type,
                               const unsigned char *bytes, int len)
 {
     if (X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
                                 type, bytes, len))
         return 1;
     return 0;
 }

 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
                               const char *attrname, int type,
                               const unsigned char *bytes, int len)
 {
     if (X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
                                 type, bytes, len))
         return 1;
     return 0;
 }

 long X509_REQ_get_version(const X509_REQ *req)
 {
     return ASN1_INTEGER_get(req->req_info.version);
 }

 X509_NAME *X509_REQ_get_subject_name(const X509_REQ *req)
 {
     return req->req_info.subject;
 }

 void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
                              const X509_ALGOR **palg)
 {
     if (psig != NULL)
         *psig = req->signature;
     if (palg != NULL)
         *palg = &req->sig_alg;
 }

 int X509_REQ_get_signature_nid(const X509_REQ *req)
 {
     return OBJ_obj2nid(req->sig_alg.algorithm);
 }

 int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
 {
     req->req_info.enc.modified = 1;
     return i2d_X509_REQ_INFO(&req->req_info, pp);
 }
	/*
	* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
	*
	* Licensed under the OpenSSL license (the "License"). You may not use
	* this file except in compliance with the License. You can obtain a copy
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	#include <stdio.h>
	#include "internal/cryptlib.h"
	#include <openssl/bn.h>
	#include <openssl/evp.h>
	#include <openssl/asn1.h>
	#include <openssl/asn1t.h>
	#include <openssl/x509.h>
	#include "internal/x509_int.h"
	#include <openssl/objects.h>
	#include <openssl/buffer.h>
	#include <openssl/pem.h>

	X509_REQ X509_to_X509_REQ(X509 x, EVP_PKEY pkey, const EVP_MD md)
	{
	X509_REQ *ret;
	X509_REQ_INFO *ri;
	int i;
	EVP_PKEY *pktmp;

	ret = X509_REQ_new();
	if (ret == NULL) {
	X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
	goto err;
	}

	ri = &ret->req_info;

	ri->version->length = 1;
	ri->version->data = OPENSSL_malloc(1);
	if (ri->version->data == NULL)
	goto err;
	ri->version->data[0] = 0; /* version == 0 */

	if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
	goto err;

	pktmp = X509_get0_pubkey(x);
	if (pktmp == NULL)
	goto err;
	i = X509_REQ_set_pubkey(ret, pktmp);
	if (!i)
	goto err;

	if (pkey != NULL) {
	if (!X509_REQ_sign(ret, pkey, md))
	goto err;
	}
	return ret;
	err:
	X509_REQ_free(ret);
	return NULL;
	}

	EVP_PKEY X509_REQ_get_pubkey(X509_REQ req)
	{
	if (req == NULL)
	return NULL;
	return X509_PUBKEY_get(req->req_info.pubkey);
	}

	EVP_PKEY X509_REQ_get0_pubkey(X509_REQ req)
	{
	if (req == NULL)
	return NULL;
	return X509_PUBKEY_get0(req->req_info.pubkey);
	}

	X509_PUBKEY X509_REQ_get_X509_PUBKEY(X509_REQ req)
	{
	return req->req_info.pubkey;
	}

	int X509_REQ_check_private_key(X509_REQ x, EVP_PKEY k)
	{
	EVP_PKEY *xk = NULL;
	int ok = 0;

	xk = X509_REQ_get_pubkey(x);
	switch (EVP_PKEY_cmp(xk, k)) {
	case 1:
	ok = 1;
	break;
	case 0:
	X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
	X509_R_KEY_VALUES_MISMATCH);
	break;
	case -1:
	X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
	break;
	case -2:
	#ifndef OPENSSL_NO_EC
	if (EVP_PKEY_id(k) == EVP_PKEY_EC) {
	X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
	break;
	}
	#endif
	#ifndef OPENSSL_NO_DH
	if (EVP_PKEY_id(k) == EVP_PKEY_DH) {
	/* No idea */
	X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
	X509_R_CANT_CHECK_DH_KEY);
	break;
	}
	#endif
	X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
	}

	EVP_PKEY_free(xk);
	return ok;
	}

	/*
	* It seems several organisations had the same idea of including a list of
	* extensions in a certificate request. There are at least two OIDs that are
	* used and there may be more: so the list is configurable.
	*/

	static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };

	static int *ext_nids = ext_nid_list;

	int X509_REQ_extension_nid(int req_nid)
	{
	int i, nid;
	for (i = 0;; i++) {
	nid = ext_nids[i];
	if (nid == NID_undef)
	return 0;
	else if (req_nid == nid)
	return 1;
	}
	}

	int *X509_REQ_get_extension_nids(void)
	{
	return ext_nids;
	}

	void X509_REQ_set_extension_nids(int *nids)
	{
	ext_nids = nids;
	}

	STACK_OF(X509_EXTENSION) X509_REQ_get_extensions(X509_REQ req)
	{
	X509_ATTRIBUTE *attr;
	ASN1_TYPE *ext = NULL;
	int idx, *pnid;
	const unsigned char *p;

	if ((req == NULL) \|\| !ext_nids)
	return NULL;
	for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
	idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
	if (idx == -1)
	continue;
	attr = X509_REQ_get_attr(req, idx);
	ext = X509_ATTRIBUTE_get0_type(attr, 0);
	break;
	}
	if (!ext \|\| (ext->type != V_ASN1_SEQUENCE))
	return NULL;
	p = ext->value.sequence->data;
	return (STACK_OF(X509_EXTENSION) *)
	ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
	ASN1_ITEM_rptr(X509_EXTENSIONS));
	}

	/*
	* Add a STACK_OF extensions to a certificate request: allow alternative OIDs
	* in case we want to create a non standard one.
	*/

	int X509_REQ_add_extensions_nid(X509_REQ req, STACK_OF(X509_EXTENSION) exts,
	int nid)
	{
	int extlen;
	int rv = 0;
	unsigned char *ext = NULL;
	/* Generate encoding of extensions */
	extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
	ASN1_ITEM_rptr(X509_EXTENSIONS));
	if (extlen <= 0)
	return 0;
	rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
	OPENSSL_free(ext);
	return rv;
	}

	/* This is the normal usage: use the "official" OID */
	int X509_REQ_add_extensions(X509_REQ req, STACK_OF(X509_EXTENSION) exts)
	{
	return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
	}

	/* Request attribute functions */

	int X509_REQ_get_attr_count(const X509_REQ *req)
	{
	return X509at_get_attr_count(req->req_info.attributes);
	}

	int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
	{
	return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
	}

	int X509_REQ_get_attr_by_OBJ(const X509_REQ req, const ASN1_OBJECT obj,
	int lastpos)
	{
	return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
	}

	X509_ATTRIBUTE X509_REQ_get_attr(const X509_REQ req, int loc)
	{
	return X509at_get_attr(req->req_info.attributes, loc);
	}

	X509_ATTRIBUTE X509_REQ_delete_attr(X509_REQ req, int loc)
	{
	return X509at_delete_attr(req->req_info.attributes, loc);
	}

	int X509_REQ_add1_attr(X509_REQ req, X509_ATTRIBUTE attr)
	{
	if (X509at_add1_attr(&req->req_info.attributes, attr))
	return 1;
	return 0;
	}

	int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
	const ASN1_OBJECT *obj, int type,
	const unsigned char *bytes, int len)
	{
	if (X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
	type, bytes, len))
	return 1;
	return 0;
	}

	int X509_REQ_add1_attr_by_NID(X509_REQ *req,
	int nid, int type,
	const unsigned char *bytes, int len)
	{
	if (X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
	type, bytes, len))
	return 1;
	return 0;
	}

	int X509_REQ_add1_attr_by_txt(X509_REQ *req,
	const char *attrname, int type,
	const unsigned char *bytes, int len)
	{
	if (X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
	type, bytes, len))
	return 1;
	return 0;
	}

	long X509_REQ_get_version(const X509_REQ *req)
	{
	return ASN1_INTEGER_get(req->req_info.version);
	}

	X509_NAME X509_REQ_get_subject_name(const X509_REQ req)
	{
	return req->req_info.subject;
	}

	void X509_REQ_get0_signature(const X509_REQ req, const ASN1_BIT_STRING *psig,
	const X509_ALGOR **palg)
	{
	if (psig != NULL)
	*psig = req->signature;
	if (palg != NULL)
	*palg = &req->sig_alg;
	}

	int X509_REQ_get_signature_nid(const X509_REQ *req)
	{
	return OBJ_obj2nid(req->sig_alg.algorithm);
	}

	int i2d_re_X509_REQ_tbs(X509_REQ req, unsigned char *pp)
	{
	req->req_info.enc.modified = 1;
	return i2d_X509_REQ_INFO(&req->req_info, pp);
	}